ipfilter: Correct a typo in a comment

(cherry picked from commit 445ecc480c48c02ad89ee97a17c4aa797f464ac3)

ipfilter: inline is superfluous for an extrn function

Remove superfluous inline for function defined as extrn.

(cherry picked from commit 835a0e2f0d60d791316ab3cfef1a9f420c0ae592)

ipfilter: Remove redundant else if

Combine two else ifs using an or.

(cherry picked from commit f98cc177f7b8afae670f28adf2b88cc00b990bf7)

ipfilter module: Style(9) requires a space after return

Reported by: jrtc27
Fixes: 8c82b37461fa4e60276639df214100fbf559ea6e

(cherry picked from commit 701301511f0ca044fc71470ed7842cd2c6fee001)

ipfilter module: Fix whitespace errors

Replace leading spaces with a tabs on affected lines.

(cherry picked from commit 80030b6cc734cc50c20d87de99bb631a06888f37)

ipfilter: Remove extraneous comment line

(cherry picked from commit 00a5b8c3d98df6c51cc8e0ec1e86c7363744bf7c)

ipfilter module: Remove trailing whitespace

(cherry picked from commit 2eef572879afe0309e3c538017c7909c1b7307d0)

ipfilter: Adjust kernel module returns to conform to style(9)

Adjust ipfilter's kernel module return statements to conform to style(9).

(cherry picked from commit 8c82b37461fa4e60276639df214100fbf5

ipfilter: Adjust kernel module returns to conform to style(9)

Adjust ipfilter's kernel module return statements to conform to style(9).

(cherry picked from commit 8c82b37461fa4e60276639df214100fbf559ea6e)

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ipfilter: INLINE --> inline

Replace the INLINE macro with inline. Some ancient compilers supported
__inline__ instead of inline. The INLINE hack compensated for it.
Ancient compilers are history.

R

ipfilter: INLINE --> inline

Replace the INLINE macro with inline. Some ancient compilers supported
__inline__ instead of inline. The INLINE hack compensated for it.
Ancient compilers are history.

Reported by: glebius

(cherry picked from commit 9be9c1c084574e3d29f38019118a50f648d2f2a8)

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ipflter: ANSIfy kernel function declarations

Convert ipfilter kernel function declarations from K&R to ANSI. This
syncs our function declarations with NetBSD hg commit 75edcd7552a0
(apply our change

ipflter: ANSIfy kernel function declarations

Convert ipfilter kernel function declarations from K&R to ANSI. This
syncs our function declarations with NetBSD hg commit 75edcd7552a0
(apply our changes). Though not copied from NetBSD, this change was
partially inspired by NetBSD's work and inspired by style(9).

Reviewed by: glebius (for #network)
Differential Revision: https://reviews.freebsd.org/D33595

(cherry picked from commit 064a5a95649d05ac084bcf2612cbac5575d76358)

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ipfilter: Move kernel bits to netpfil

Through fixes and improvements our ipfilter sources have diverged
enough to warrant move from contrib into sys/netpil. Now that I'm
planning on implementing MSS

ipfilter: Move kernel bits to netpfil

Through fixes and improvements our ipfilter sources have diverged
enough to warrant move from contrib into sys/netpil. Now that I'm
planning on implementing MSS clamping as in iptables it makes more
sense to move ipfilter to netpfil.

This is the first of three commits the ipfilter move.

Suggested by glebius on two occaions.

Suggested by and discussed with: glebius
Reviewed by: glebius, kp (for #network)
Differential Revision: https://reviews.freebsd.org/D33510

(cherry picked from commit 3b9b51fe464ebb91e894742a6a0e6417e256f03a)

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